Finding the Fourth Proportional to 10,449.38, 15,649.68 and 9,074

Step by Step Solution

1. Step 1: Write the proportion equation
   10,449.38 : 15,649.68 = 9,074 : x
2. Step 2: Convert to fraction form
   10,449.38/15,649.68 = 9,074/x
3. Step 3: Cross multiply
   10,449.38x = 15,649.68 × 9,074
4. Step 4: Simplify right side
   10,449.38x = 142,005,196.32
5. Step 5: Solve for x
   x = 142,005,196.32/10,449.38
6. Step 6: Final answer
   x = 13,589.82